Read that ad carefully, OO--it says it is not to exhaust but to move air WITHIN the rack......wtf?!?

Don't have one, but considered it last Summer when we both discovered how hot the BenchMark DAC gets.

At any rate, I suspect if air is moving at a good rate, it has to go somewhere (out?).

The deal on that high dollar Parasound one is silent operation, but I cannot vouch for that.Last Summer, I added a small, silent (personal) fan I got at Staples out here to blow on me and my stuff. I don't know if it made any difference , but will bring it out here again as the weather warms back to 100+ days.

I built this computer out here with a solid state drive just because of heat. It has a tiny CPU. On a normal computer, you let the fan go 'north', and the CPU will quickly overheat and the computer will crash.A fan is a good thing, and sometimes essential.